On Fri, 27 Sep 2019, Shah, Nehal-bakulchandra wrote: > >>> Do you have BAR memory allocation failures in dmesg with IOMMU on? > > > > No. The device is *not* treated as PCI device and I still think that > > this is the source of the evil. > > > >>> Actually, sharing both working and non-working dmesg, as well as > >>> /proc/iomem contents, would be helpful.
> >> Yes, can you please grab dmesg from a boot with iommu enabled and add > >> 'amd_iommu_dump' to the kernel command line? That should give some > >> hints on what is going on. > > > > For now I attach a dmesg and iomem from the boot with IOMMU enabled. > > Nothing much interesting without IOMMU, sdhci-acpi there just works -- > > let me know if you still want me to send the kernel msg. > > > > Thanks for looking into this! > > > > I have added Suravee from AMD in the mail loop. He works on IOMMU part. > As per my understanding, it needs a patch in IOMMU driver for adding > support of EMMC. Note that on Ryzen platform we have EMMC 5.0 as ACPI > device. Friendly ping ... any news here? Thanks, -- Jiri Kosina SUSE Labs
